Apex is Callstack's language model with a 262K context window and up to 131K output tokens, starting at $0.5 / 1M input and $3.00 / 1M output. An agentic coding LLM specialized for mobile and web development with React Native, React, and Next.js, featuring a large context window and tool-use capabilities.
Capabilities
Input1/5
Text·
Image✓
Audio·
Video·
PDF·
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities3/13
Reasoning✓
Adaptive Reasoning·
Function Calling✓
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching✓
Assistant Prefill·
Pricing by Provider
US Dollar ($)
Per 1M tokens
| Provider | Standard | ||
|---|---|---|---|
| Input $ / 1M | Output $ / 1M | Cache Read $ / 1M | |
| $0.5 | $3.00 | $0.2 | |
Cost Calculator
US Dollar ($)
Preset: